Regex Replace Tester
Preview regex find-and-replace results with capture group references and live highlighting.
Regex Replace Tester
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About this tool
Test a find-and-replace before running it. Enter a pattern, flags, a replacement string (with $1 group references) and sample text; the preview highlights matches and the result box shows the output.Questions
- Why do I get no replacements with a non-global flag?
- Without
g, only the first match is replaced. If you see none, check that the pattern matches the example text and does not have an invalid flag.